JPS56155510A - Metal dust magnetic core - Google Patents

Metal dust magnetic core

Info

Publication number
JPS56155510A
JPS56155510A JP5768880A JP5768880A JPS56155510A JP S56155510 A JPS56155510 A JP S56155510A JP 5768880 A JP5768880 A JP 5768880A JP 5768880 A JP5768880 A JP 5768880A JP S56155510 A JPS56155510 A JP S56155510A
Authority
JP
Japan
Prior art keywords
powders
high pressure
magnetic core
metal dust
stearite
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP5768880A
Other languages
Japanese (ja)
Inventor
Tadashi Onodera
Masakazu Okabe
Katsuo Nadamoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tokin Corp
Original Assignee
Tohoku Metal Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tohoku Metal Industries Ltd filed Critical Tohoku Metal Industries Ltd
Priority to JP5768880A priority Critical patent/JPS56155510A/en
Publication of JPS56155510A publication Critical patent/JPS56155510A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/20—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder
    • H01F1/22—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together
    • H01F1/24—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together the particles being insulated

Abstract

PURPOSE:To contrive the elevation of electromagnetic performance without destroying an insulating layer by a method wherein magnetic metal powders are added with water glass or the like and a specified amount of zinc stearite and high pressure molding-heated. CONSTITUTION:The magnetic metal powders of permalloy system are added with the water glass, an organic resin insulating material, for example, at least either of pheno resin or melamine resin, and the zinc stearite of 0.2-2.0%, and applied an insulation treatment between the particles of which powders are high pressure- molded and heat-treated to be made the metal dust magnetic core. Thereby, friction between the particles is remarkably reduced even the powders being high pressure-molded and the electromagnetic performance can be improved.
JP5768880A 1980-04-30 1980-04-30 Metal dust magnetic core Pending JPS56155510A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5768880A JPS56155510A (en) 1980-04-30 1980-04-30 Metal dust magnetic core

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5768880A JPS56155510A (en) 1980-04-30 1980-04-30 Metal dust magnetic core

Publications (1)

Publication Number Publication Date
JPS56155510A true JPS56155510A (en) 1981-12-01

Family

ID=13062877

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5768880A Pending JPS56155510A (en) 1980-04-30 1980-04-30 Metal dust magnetic core

Country Status (1)

Country Link
JP (1) JPS56155510A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6020501A (en) * 1983-07-14 1985-02-01 Nippon Ferrite Ltd Dust core
JPS6299402A (en) * 1985-10-24 1987-05-08 Hitachi Metals Ltd Fe-ni alloy green compact iron magnetic core
JPS6299401A (en) * 1985-10-24 1987-05-08 Hitachi Metals Ltd Fe-ni alloy green compact magnetic core
US5799386A (en) * 1994-10-24 1998-09-01 Ivoclar Ag Process of making metal castings
US6149704A (en) * 1998-07-29 2000-11-21 Tdk Corporation Ferromagnetic powder for dust cores, dust core, and dust core fabrication process
WO2001022448A1 (en) * 1999-09-23 2001-03-29 Robert Bosch Gmbh Mouldable material and method for producing a weakly magnetic composite material therewith
EP1148520A1 (en) * 2000-04-22 2001-10-24 Robert Bosch Gmbh Soft magnetic material and its production process
CN102473517A (en) * 2009-07-23 2012-05-23 日立粉末冶金株式会社 Dust core and method for producing same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4827115A (en) * 1971-08-10 1973-04-10

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4827115A (en) * 1971-08-10 1973-04-10

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6020501A (en) * 1983-07-14 1985-02-01 Nippon Ferrite Ltd Dust core
JPS6299402A (en) * 1985-10-24 1987-05-08 Hitachi Metals Ltd Fe-ni alloy green compact iron magnetic core
JPS6299401A (en) * 1985-10-24 1987-05-08 Hitachi Metals Ltd Fe-ni alloy green compact magnetic core
US5799386A (en) * 1994-10-24 1998-09-01 Ivoclar Ag Process of making metal castings
US6149704A (en) * 1998-07-29 2000-11-21 Tdk Corporation Ferromagnetic powder for dust cores, dust core, and dust core fabrication process
KR100341627B1 (en) * 1998-07-29 2002-06-22 사토 히로시 Ferromagnetic powder for dust cores, dust core, and dust core fabrication process
WO2001022448A1 (en) * 1999-09-23 2001-03-29 Robert Bosch Gmbh Mouldable material and method for producing a weakly magnetic composite material therewith
EP1148520A1 (en) * 2000-04-22 2001-10-24 Robert Bosch Gmbh Soft magnetic material and its production process
CN102473517A (en) * 2009-07-23 2012-05-23 日立粉末冶金株式会社 Dust core and method for producing same
US8398879B2 (en) 2009-07-23 2013-03-19 Hitachi Powdered Metals Co., Ltd. Soft magnetic powdered core and method for producing same

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